查询词典 hydrogen fluoride

Process comprising contacting initiator with alkylene oxide in the presence of hydrogen fluoride and a double metal cyanide complex catalyst.

一种方法，其包括说明书摘要在氟化氢和双金属氰化物复合催化剂存在下使引发剂与亚烷基氧化物接触。

ScF3-MX molten salt was made from scandium oxide and ammonium hydrogen fluoride by solid state fluoridation under heating and melting.

研究制定了ScF_3-MX熔盐Al熔体中Mg热还原制备Al-Mg-Sc中间合金中南大学博士学位论文摘要的新工艺。

Longer reaction time (48 h) and increase of hydrogen fluoride and catalyst are good for fluorination.

反应后的滤渣可再生为氧化汞循环使用，回收3次，反应的转化率和选择率均大于85%。

Synthesis of trifluoromethylbenzene by fluorination of trichloromethylbenzene with hydrogen fluoride was investigated.

三氟甲基苯是一种重要的有机化工中间体，广泛应用于医药农药染料等领域。

How reduce discharge of hydrogen fluoride become an important subject for research effectively.

如何有效降低氟化氢的排放成为了一个重要的研究课题。

The results indicate that relationship between hydrogen fluoride laser and aluminum is different from that between CO2 laser and aluminum.

结果表明，氟化氢激光与铝靶相互作用得到的冲量耦合系数和激光功率密度的关系与CO2激光不同。

As raw materials for hydrogen fluoride, F125 can increase added value of upstream products, is conducive to the development of regional economy cycle, so it is a good project planning

F125以氟化氢等为原料，可增加上游氟产品的附加值，有利于发展区域内循环经济，是一个较好的规划项目。

The mixture of 1, 1, 1, 3, 3-pentafluoropropane (HFC-245fa) and hydrogen fluoride has a minimum axeotrope.

1，1，1，3，3-五氟丙烷－氟化氢混合物是一种二元最低共沸物。

The catalytic effect of hydrogen fluoride is the most effective and the next most effective is methanol molecule among the four molecules.

在这四种溶剂分子当中，氟化氢的催化效率最高，其次是甲醇分子。

A weak poisonous liquid acid; formed by solution of hydrogen fluoride in water.

一种有毒的液态弱酸，由氯化氢溶于水中形成。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。